1. Check the link on address bar  and look for "item=" . In the example below  "item=project_list"

http://wms.sanlien.com.tw/sanlien_crm/user.php?item=project_list

2. Then  connect to wms via FTP and navigate to /var/www/html/sanlien_crm/user.php

3. look for the case "project_list" and locate the file to edit .